Here in the USA, Trumpists are very hostile towards immigrants coming from the Mexican border to the point where they infamously proposed to build a wall. The Biden administration is better in-name only, and has kept the concentration camps at the border.
Why is there so much hatred toward these immigrants? What is the material cause of this?
Well, I think what it is I resentment. People pay taxes to support their communities, their neighbors and countrymen and they see people from elsewhere showing up and getting support, with no loyalty to the community that gives it to them, and they get upset. They see the culture around them changing faster than they can keep up and it makes them uncomfortable. They ask themselves what would happen to them if they tried the same thing in other countries and conclude that those people would react the same way they are, and they wonder why they’re expected to participate in a one sided situation like that. They feel like welcome mats, nobody likes that feeling.